[CentOS] Replacing failed software RAID drive
clintd at scms.waikato.ac.nz
Wed Oct 10 03:21:24 UTC 2007
Hugh E Cruickshank wrote:
> From: Les Mikesell Sent: October 7, 2007 18:53
>> OK, you just have to replace the drive, fdisk matching partitions on it
>> ("fdisk -l /dev/sde" will show the sizes you need), then use
>> mdadm --add /dev/md? /dev/sda?
>> for each one to add the missing partition back.
> I have been able to review all this and it looks very straight forward.
>> Then reinstall grub on the drive.
> Now I have some questions:
> 1. Since the /boot partition was mirrored and will be restored on the
> new sda drive I do not really want to do a full grub install. From
> what I have read that will overwrite existing /boot/grub/grub.conf
> file. So I just want to write the MBR on the drive. How to I do
> that (the docs I have found were rather unclear on that aspect)?
Boot the system from CD or similar in Rescue Mode and then use something
grub-install --no-floppy /dev/hda
> 2. Can a install grub on the replaced boot drive with the system still
> Regards, Hugh
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